Properties of Polyurethane
Properties of Polyurethane
Polyester & Polyether Urethane Properties
The two main types of Polyurethanes are Polyester and Polyether. Each offers its own performance properties. Below are typical properties for both types of Polyurethane.
Benefits And Properties Of Ester And Ether Formulations
Ester
- Solvent Resistant
- Oil Resistance
- Sliding Abrasion Resistance
- Excellent Mechanical Properties
- Resistance to Heat Aging
- Vibration Dampening
- Higher Split Tear Strength
- MDI & TDI Food Grade Applications
Ether
- Superior Rebound Properties
- Low-Temperature Flexibility
- Excellent Hydrolytic Stability
- MDI & TDI Food Grade Applications
- Excellent Mechanical Properties
- Resistance to Dynamic Heat
- Impingement Abrasion Resistance
Advantages Of MDI & TDI Urethane Properties
| PROPERTY | MORE ADVANTAGES | LESS ADVANTAGES |
| Tear Strength | MDI & TDI Polyester | MDI & TDI Polyether |
| Abrasion Resistance: Impingement | MDI Polyether | Polyether |
| Compression Set | TDI Polyester & Polyether | MDI Polyester & Polyether |
| Tensile (Tension) Strength | MDI & TDI Polyester | MDI & TDI Polyether |
| Rebound | MDI Polyether | TDI Polyester |
| Abrasion Resistance: Sliding | MDI & TDI Polyester | Polyether |
| Low Temperature Properties | MDI Polyether | TDI Polyester |
| Hydrolysis (Reaction With Water) Resistance | MDI Polyether | TDI Polyester |
| High Temperature Properties | TDI Polyester & Polyether | MDI Polyester & Polyester |
| Oil Resistance | TDI & MDI Polyester | TDI & MDI Polyether |
| Heat Aging | MDI & TDI Polyester | Polyether |
| Heat Buildup | TDI & MDI Polyether | TDI & MDI Polyester |
Benefits And Advantages Of Choosing Polyurethane Over Other Materials
The Benefits Of Polyurethane Over Rubber Are:
- Abrasion Resistance
- Tensile Strength
- Higher Load-bearing Capacity
- Superior tolerance to grease, oil, oxygen and ozone
- Non-marring of products
- Water resistance
- Low permanent set-a/k/a Compression Set
The Benefits Of Polyurethane Over Metal Are:
- Sound dampening – It absorbs noise & vibration.
- Lighter in weight.
- Elastomeric – Can be compresssed up to 25% of its normal size and still rebound.
- Abrasion & corrosive resistance – Out performs in a variety of applications, including water & chemical environments.
- Non-marring when it comes into contact with other objects.
The Benefits Of Polyurethane Over Plastic Are:
- Noise reduction
- Abrasion/impact resistance
- Ability to stretch and return to its original form
- Self healing
- Chemical resistance is greater
- Broader range of formulations and durometers(hardness)
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